Man pages for timechange
Efficient Changing of Date-Times

time_addArithmetics with periods
timechange-packagePackage 'timechange'
time_getGet components of a date-time object
time_roundRound, floor and ceiling for date-time objects
time_updateUpdate components of a date-time object
time-zonesTime-zone manipulation
timechange documentation built on Jan. 13, 2021, 5:19 p.m.